Forgot some extra cleanup in Discord RPC

src/discordrpc.h

@@ -1,13 +1,18 @@
 /*
  * OpenSubsonicPlayer
- * Goldenkrew3000 2025
+ * Goldenkrew3000 / Hojuix 2026
  * License: GNU General Public License 3.0
+ * Info: Discord RPC Handler
  */
 
 #ifndef _DISCORDRPC_H
 #define _DISCORDRPC_H
 #include <time.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
 #define DISCORDRPC_STATE_IDLE 0
 #define DISCORDRPC_STATE_PLAYING_OPENSUBSONIC 1
 #define DISCORDRPC_STATE_PLAYING_LOCALFILE 2
@@ -29,4 +34,8 @@ int OSSP_discordrpc_Init();
 void OSSP_discordrpc_update(OSSP_discordrpc_t* obj);
 char* OSSP_discordrpc_getOS();
 
-#endif
+#ifdef __cplusplus
+}
+#endif // __cplusplus
+
+#endif // _DISCORDRPC_H